diff --git a/test/gui.lua b/test/gui.lua
index 1550fc1de..ac350ea1b 100644
--- a/test/gui.lua
+++ b/test/gui.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 function test.getCurViewscreen()
     local scr = dfhack.gui.getCurViewscreen()
     local scr2 = df.global.gview.view
@@ -18,7 +20,7 @@ function test.getViewscreenByType()
 
     local bad_type = df.viewscreen_titlest
     if scr._type == bad_type then
-        bad_type = df.viewscreen_optionst
+        bad_type = df.viewscreen_dwarfmodest
     end
     local scr_bad = dfhack.gui.getViewscreenByType(bad_type)
     expect.eq(scr_bad, nil)
diff --git a/test/structures/find.lua b/test/structures/find.lua
index c01f071e1..471220479 100644
--- a/test/structures/find.lua
+++ b/test/structures/find.lua
@@ -1,4 +1,5 @@
 config.mode = 'title'
+config.targets = 'core'
 
 local function clean_vec(vec)
     while #vec > 0 do
diff --git a/test/structures/misc.lua b/test/structures/misc.lua
index 5c9f41561..277457dfe 100644
--- a/test/structures/misc.lua
+++ b/test/structures/misc.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 function test.overlappingGlobals()
     local globals = {}
     for name, _ in pairs(df.global) do
diff --git a/test/structures/other_vectors.lua b/test/structures/other_vectors.lua
index bfc6086a4..453ab1dca 100644
--- a/test/structures/other_vectors.lua
+++ b/test/structures/other_vectors.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 function test.index_name()
     for _, k in ipairs(df.units_other_id) do
         expect.eq(df.global.world.units.other[k]._kind, 'container')
diff --git a/test/structures/primitive_refs.lua b/test/structures/primitive_refs.lua
index 74abd02b9..77049b673 100644
--- a/test/structures/primitive_refs.lua
+++ b/test/structures/primitive_refs.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 utils = require('utils')
 
 function with_temp_ref(...)
diff --git a/test/structures/ref_target.lua b/test/structures/ref_target.lua
index b9c568805..56bfdbfc7 100644
--- a/test/structures/ref_target.lua
+++ b/test/structures/ref_target.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 function test.get()
     dfhack.with_temp_object(df.unit:new(), function(unit)
         expect.eq(unit:_field('hist_figure_id').ref_target, df.historical_figure)
diff --git a/test/structures/types_meta.lua b/test/structures/types_meta.lua
index 212e9c7ed..5809960bf 100644
--- a/test/structures/types_meta.lua
+++ b/test/structures/types_meta.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 function test.struct()
     expect.eq(df.coord._kind, 'struct-type')
     expect.eq(tostring(df.coord), '<type: coord>')
diff --git a/test/structures/unions.lua b/test/structures/unions.lua
index 714786a96..9e4c767db 100644
--- a/test/structures/unions.lua
+++ b/test/structures/unions.lua
@@ -1,3 +1,5 @@
+config.targets = 'core'
+
 local utils = require('utils')
 
 function test.unit_action_fields()